Impact

There are two separate code paths in which memory can be allocated per message in excess of the grpc.max_receive_message_length channel option:

1. If an incoming message has a size on the wire greater than the configured limit, the entire message is buffered before it is discarded.
2. If an incoming message has a size within the limit on the wire but decompresses to a size greater than the limit, the entire message is decompressed into memory, and on the server is not discarded.

Patches

This has been patched in versions 1.10.9, 1.9.15, and 1.8.22

References

• GHSA-7v5v-9h63-cj86
• grpc/grpc-node@08b0422
• grpc/grpc-node@674f4e3
• grpc/grpc-node@a8a0203
• https://nvd.nist.gov/vuln/detail/CVE-2024-37168